The Sitefinity licensing model is domain-based, meaning that with a single license, you can register a given domain name (mywebsite.com). Sitefinity will allow you to register unlimited sub-domains for non-production purposes such as development and testing. Sitefinity is available in two packages tailored to different solutions. Most notably, the versions differ in the number of concurrent content editors and feature sets. Our How to Buy and Sitefinity Features pages show a complete comparison table of all packaging options. All Sitefinity licenses are one-time (perpetual), with an annual service subscription fee for access to product releases, updates and support services.